A clear colorless liquid in an open beaker was heated to boiling. The liquid began to boil at 110°C, and as vapors escaped, the temperature of boiling gradually increased to 115°C, at which the heating was stopped. On the basis of this information, we can say that the material in the beaker was a
mixture
Based on the given information, we can determine the material in the beaker by analyzing its boiling behavior. Here's how we can arrive at a conclusion:
1. Boiling Point: The fact that the liquid started boiling at 110°C indicates that its boiling point is below that temperature. This suggests that the substance has a relatively low boiling point.
2. Gradual Increase in Temperature: As the liquid continued to boil, the temperature gradually increased to 115°C. This temperature rise shows that the substance is boiling off or evaporating, as higher energy is being applied to the liquid. These observations suggest that the liquid is not a pure substance but a mixture of substances.
Considering these points, we can make an educated guess about the identity of the substance. Since the liquid is clear and colorless, it is likely to be either water or a volatile organic solvent commonly used in laboratories, such as ethanol or methanol.
To confirm the exact identity of the substance, further experimental tests or analyses would be necessary, such as measuring its density, performing chemical tests, or using spectroscopy techniques.